人教版九年级全册 Unit 5 What are the shirts made of？ Section B 3a-Self Check 分层练习（含答案）

人教版九年级英语Unit 5 What are the shirts made of 第六课时 Section B 3a-Self Check 分层练习 一、基础阅读练习 Passage 1 Silk is one of the most famous materials in the world. It has been used for thousands of years. The history of silk began in ancient China. According to legend, the Chinese Empress Leizu discovered silk when a cocoon fell into her tea. She noticed that the cocoon was made of a long, soft thread. This thread could be used to make beautiful fabric. The Chinese kept the secret of silk production for many years. They did not want other countries to know how to make silk. However, eventually, the secret spread to other parts of the world. Today, silk is produced in many countries, but China is still the largest producer of silk in the world. Silk is known for its softness and strength. It is used to make clothing, scarves, and even furniture. Silk is also very expensive because it takes a lot of work to produce. Thousands of silkworms are needed to make just one kilogram of silk. Questions: 1. Where did the history of silk begin 2. Who discovered silk according to the legend 3. Why did the Chinese keep the secret of silk production 4. What is silk known for 5. Why is silk expensive Passage 2 Paper is one of the most important inventions in human history. It was first invented in China over 2,000 years ago. The process of making paper has changed a lot since then, but the basic idea is still the same. First, raw materials like wood, cotton, or bamboo are collected. These materials are then broken down into small pieces and mixed with water to create a pulp. The pulp is spread out into thin sheets and pressed to remove the water. Finally, the sheets are dried and cut into the desired size. Today, paper is used for many things, such as writing, printing, and packaging. However, the production of paper can have a negative impact on the environment. Cutting down trees for paper can lead to deforestation, and the chemicals used in the process can pollute water and air. Questions: 1. Where was paper first invented 2. What are the raw materials used to make paper 3. What is the first step in the process of making paper 4. What are some uses of paper today 5. What are the environmental problems caused by paper production 二、提高阅读练习 Passage 3 The kimono is a traditional Japanese garment that has been worn for centuries. Making a kimono is a complex process that requires great skill and patience. The fabric used for kimonos is usually silk, which is dyed by hand to create beautiful patterns. The first step in making a kimono is to choose the fabric. The fabric is then cut into long, rectangular pieces. These pieces are sewn together to form the basic shape of the kimono. After that, the kimono is decorated with intricate designs. These designs are often inspired by nature, such as flowers, birds, or landscapes. Kimonos are worn on special occasions, such as weddings, festivals, and tea ceremonies. They are also considered works of art. Ma ... ...